<HTML>Friends, Hep!   Hep!   (Okay, I grew up in Texas) I need an accurate scientific explanation for why SOME single bass strings g= o yow-yow-yow, when played by themselves. A new customer I am about to go see, with a new Steinway B, said he wanted m= e to maybe replace some bass strings that were "wobbling." I thought, okay, = unisons or voicing, but then he said they were singles. I realized I had acc= epted that sound for decades, and just tuned around it, considering it a sho= rtcoming of shorter scales. Later that day, I listened to 5 B's, 4 L's, and = a D, as well as a 7'4" Boesendorfer. All the Steinways had yowing singles, but not necessarily on the same notes.= Some notes would be clear. The D was the best of the Steinways, reasonably = clear, and the Bösendorfer was extremely clean. The Steinways are single-wrapped and the Bös is double-wrapped, but I also= listened to some 126 cm Bostons, which are double-wrapped, and they had ran= dom wows too. I've always chalked it up to "inharmonicity" or longitudinal waves or someth= ing like that, but I realized that doesn't really work, and now it's driving= me crazy not to be able accurately to explain this. What is happening, and = why is the Bösendorfer so clean? Wobbling in Stockton CA, Bob Davis </HTML>